4 papers
The excluded minors for lattice path polymatroids
Joseph Bonin, Carolyn Chun, Tara Fife
We find the excluded minors for the minor-closed class of lattice path polymatroids as a subclass of the minor-closed class of Boolean polymatroids. Like lattice path matroids and…
Reciprocal maximum likelihood degrees of diagonal linear concentration models
Christopher Eur, Tara Fife, José Alejandro Samper +1
We show that the reciprocal maximal likelihood degree (rmld) of a diagonal linear concentration model of dimension is equal to $(-2)^rχ_M( \…
Generalized Laminar Matroids
Tara Fife, James Oxley
Nested matroids were introduced by Crapo in 1965 and have appeared frequently in the literature since then. A flat of a matroid is Hamiltonian if it has a spanning circuit. A m…
Laminar Matroids
Tara Fife, James Oxley
A laminar family is a collection of subsets of a set such that, for any two intersecting sets, one is contained in the other. For a capacity function on $\mat…